/Engine/Source/Runtime/MovieScene/Public/MovieSceneClipboard.h
Get the key track groups that were copied
const [TArray](API\Runtime\Core\Containers\TArray)< [TArray](API\Runtime\Core\Containers\TArray)< [FMovieSceneClipboardKeyTrack](API\Runtime\MovieScene\FMovieSceneClipboardKeyTrack) > > & GetKeyTrackGroups() const